Engineer&#39;s valve.



No. 804,909. PATENTED NOV. 21, 1905.

H. W. YOUNG.

ENGINEERS VALVE. APPLICATION FILED MARJ, lees.

ncsscs Indenfor W *7 B Harry/V. Young fi pm @04 J W UNITED STATES PATENTHARRY W. YOUNG, oE PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOHN E.REYBURN, OF PHILADELPHIA, PENNSYLVANIA.

ENGINEERS VALVE.

Specification of Letters Patent.

Patented Nov. 21, 1965.

Application filed March 1, 1905. Serial No. 247,986.

To all whom, it may concern:

Be it known that I, HARRY W. YOUNG, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inEngineers Valves, of which the following is a specification.

This invention relates to means for the control of air-brakes, moreespecially for electric cars for urbanand interurban service, and hasfor its object the construction of a valve which will be balancedagainst tilting on its seat, so that it will wear evenly, and theair-pressure will thereby be prevented from escaping, and theair whenbeing exhausted will escape through a passage at the center of thevalve, so that no undue pressure can be exerted at the valves edge. Thevalve is also provided with another internal doubleported passage forthe air from the reservoir to the brake-cylinders. The stem by which thevalve is operated together with the removable handle for operating thestem are constructed in manner to prevent the valve being tampered with,the upper part of the stem being hexagonal-shaped with one vertexflattened, and an internal projection within the hub of the handleprevents its being removed from or put on the stem except when the brakeis out of service, and other features which will be further described.

The invention is illustrated in the accompanying drawings, in which likeparts are designated by similar reference characters, in which Figure 1is a front elevation. Fig. 2 is a top View. Fig. 3 is a section on linemm, Fig. 2. Fig. 4 is a plan view of the valve-seat on the lower part ofthe case. Fig. 5 is a section of the valve on line 41 Fig. 3, as whenset to admit air to the brake-cylinders. Fig. 6 is the same section asFig. with the valve as set to release the air from the brake-cylinders.Fig. 7 is the same section as the two previous views with the valve asset to close all the ports or at stop, as in Figs. 1, 2. Fig.8 is a topview of the valve-stem and the hub of the handle. Fig. 9 is a sectionthrough the handle-hub and the top of the upper case on line .9 s, Fig'.2.

The valve-case comprises an upper part 1 and a lower part 2, betweenwhich is secured valve-seat 3. Pipe 4 leads from the air-reservoir, andpipe 5 leads to the brake-cylinders, and through ports 6 7 in part2 andports 8 9 in valve-seat 3 they are put into communication or cut off byvalve 10. Valve 10 is a disk with an internal port 11, which at 12 13opens through the bottom of the valve, and an internal port 14, whichhas an opening 15 through the bottom of the valve concentric withopenings 12 13 and an opening 16 through a central hub 17 at the bottomof the valve, which fits into an opening 18 in valve-seat 3 incommunication with port 19 in part 2, leading to the muffler 20, whichis preferably secured to the dasher of the car and is provided withmultiple small exits 21 to deaden the noise of the escaping air. Thus itwill be seen that valve 10 is a solid disk except as to its ports 11 14and their openings 12 13 15 16. At the top of the valve is an annularring 22, forming a pocket 23 for spring 24. Ring 22 is cut away onopposite sides to receive projections 25, reaching down from a collar26, formed on stem 27, the engagement of projections 25 with ring 22being the means by which stem 27 turns valve 10. Spring 24 passes upwardinto a pocket 28 within stem 27 and part 1 has a removable wearing-ring29, which bears on collar 26 of the stem. Stem 27 at its lower end is ofcircular section, and its upper end is a polygonal section within thediametral limits of the lower end, except that one vertex is cut away toform a flattened surface 30, the part 30 being in the position shown inFig. 2 when the brake is inoperative and the only position in whichhandle 31 can be removed or attached. Within the upper part of part 1 isa groove 32, with a slot 33 therefrom through top 34, and a projection35 on the outside of hub 36 passes through slot 33 as the handle is puton or taken off, and when on and turned the bandle cannot be removeduntil the projection is again at the slot. To insure the valve being atits inoperative position when the handle is removed, a projection 37extends within the hub 36, which can only pass the flattened part 30 ofstem 27, and being in the same plane as the outer projection 35 the stemand handle can only be separated or united when projections 35 and 37are opposite slot 33, at which time valve 10 has all ports and openingscovered and inoperative.

I claim- 1. In a valve, a case therefor, and a rotatable disk valvehaving two distinct and separate ports formed within its interior, oneof said ports beingcurvilinear,nearits periphery, with an opening ateach end through the bot tom of the valve, and the other port beingradial, with one opening through the bottom of the valve at its center,and the other opening concentric with the openings of the opposite portand means whereby the valve may be rotated to place the ports aforesaidin 0perative and inoperative relation with the ports of the valve seatand case.

2. In a valve, a case, a valve within the case having separate andindependent ports within its interior and adapted to communicate withports in the case, a stern engaging the valve for its rotatablemovement, the upper part of the stem being formed polygonal, withaflattened vertex; a handle for the stern having a hub with apolygonally-formed interior adapt ed to fit over the stem, a projectionwithin the hub which will only allow the hub to pass onto the stem whenits flattened portion is opposite thereto, and at which time the valveis in inoperative position, and means to prevent the removal orreplacing of the handle from the stem and case-top except when the valveis in its inoperative position.

In testimony whereof I affix my signature in presence of two witnesses.

HARRY W. YOUNG. Witnesses:

R. C. WRIGHT, WILLIAM C. S'roEvER.

